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Finding the Fourth Proportional to 7,788,676.70, 11,676,693.92 and 3,243,126.20

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Solution

The fourth proportional to 7,788,676.70, 11,676,693.92 and 3,243,126.20 is: 4,862,057.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788,676.70 : 11,676,693.92 = 3,243,126.20 : x
  2. Step 2: Convert to fraction form
    7,788,676.70/11,676,693.92 = 3,243,126.20/x
  3. Step 3: Cross multiply
    7,788,676.70x = 11,676,693.92 × 3,243,126.20
  4. Step 4: Simplify right side
    7,788,676.70x = 37,868,991,906,733.60
  5. Step 5: Solve for x
    x = 37,868,991,906,733.60/7,788,676.70
  6. Step 6: Final answer
    x = 4,862,057.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.